Can we read from a different database and write to a different database from the Silverstripe application?

<%- if @topic_view.topic.tags.present? %>
<%= t 'js.tagging.tags' %>: <%- @topic_view.topic.tags.each do |t| %> <%= t %> <%- end %>
<% end %>

Idea is to use two databases in same silverstripe application.